Introduction to Atoms

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are the three main parts of an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the charge of electrons?

Back

Electrons have a negative charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge.

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

Where are electrons located in an atom?

Back

Electrons orbit around the nucleus in electron shells.

Front

What is the mass of an atom primarily determined by?

Back

The mass of an atom is primarily determined by the number of protons and neutrons.

Front

What is the Thomson model of the atom?

Back

The Thomson model describes the atom as a sphere of positive charge with negatively charged electrons embedded in it.

Front

What is the Dalton model of the atom?

Back

The Dalton model states that atoms are indivisible and that each element consists of identical atoms.